Tuesday, June 25, 2024

Power Management using Automotive-Grade Power Inductors

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TDK Corp. has introduced an efficient and reliable  CLT32 series of power inductors. This new design provides high-performance electrical values in a small package. These devices target advanced driver assistance systems (ADAS) and autonomous driving (AD) power management ICs (PMICs) and DC/DC converters with high clock rates and switching frequencies up to 10 MHz. They are designed with a solid copper coil over-molded with a ferromagnetic plastic compound. The solid copper coil enables these devices to achieve an exceptionally low RDC value, keeping losses to a minimum.

Construction of TDK’s CLT32 power inductors. (Source: TDK Corp.)

The features of the CLT32 series of power inductors are as follows:

      • Extremely compact size of 3.2 x 2.5 x 2.5 mm
      • High saturation current of up to 60 A
      • Operating temperature of up to 165 °C
      • High reliability due to the innovative design without internal connections
      • Extremely low RDC
      • Certified according to AEC-Q200

These power inductors are AEC-Q200 certified. These devices are convenient for safety-critical automotive applications that use high-performance processors, which require currents in the double-digit ampere range. TDK has introduced the CLT32 series of power inductors for high-reliability safety-critical advanced driver assistance systems (ADAS) and autonomous driving (AD) power management applications. The ohmic resistance is 0.39 mΩ at an inductance value of 17 nH.

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TDK said they are the most compact SMT power inductors in their performance class. PMICs are used as power supplies to provide these high currents, which use power inductors for stabilization at the outputs. The CLT32 series can handle switching frequencies of up to 10 MHz and already meets future requirements placed on DC/DC converters with high clock rates, added the company.


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